Kata Library: Scala Practice
Sign Up
Time to claim your honor
Training
Practice
Complete challenging
Kata
to earn honor and ranks. Re-train to hone technique
Freestyle Sparring
Take turns remixing and refactoring others code through
Kumite
Community
Leaderboards
Achieve honor and move up the global leaderboards
Chat
Join our
Discord
server and chat with your fellow code warriors
Discussions
View our
Github Discussions
board to discuss general Codewars topics
About
Docs
Learn about all of the different aspects of Codewars
Blog
Read the latest news from Codewars and the community
Log In
Sign Up
Library
Collections
Newest
Oldest
Popularity
Positive Feedback
Most Completed
Least Completed
Hardest
Easiest
Name
Relevance
Low Satisfaction
All
My Languages
Agda (Beta)
BF (Beta)
C
CFML (Beta)
Clojure
COBOL (Beta)
CoffeeScript
CommonLisp (Beta)
Coq
C++
Crystal
C#
D (Beta)
Dart
Elixir
Elm (Beta)
Erlang (Beta)
Factor (Beta)
Forth (Beta)
Fortran (Beta)
F#
Go
Groovy
Haskell
Haxe (Beta)
Idris (Beta)
Java
JavaScript
Julia (Beta)
Kotlin
λ Calculus (Beta)
Lean
Lua
NASM
Nim (Beta)
Objective-C (Beta)
OCaml (Beta)
Pascal (Beta)
Perl (Beta)
PHP
PowerShell (Beta)
Prolog (Beta)
PureScript (Beta)
Python
R (Beta)
Racket
Raku (Beta)
Reason (Beta)
RISC-V (Beta)
Ruby
Rust
Scala
Shell
Solidity (Beta)
SQL
Swift
TypeScript
VB (Beta)
Approved & Beta
Approved
Beta
All
Kata I have not trained on
Kata I have not completed
Kata I have completed
8 kyu
easiest
7 kyu
6 kyu
5 kyu
4 kyu
3 kyu
2 kyu
1 kyu
hardest
Algorithms
3
Arrays
2
Ciphers
1
Cryptography
1
Fundamentals
14
Regular Expressions
14
Security
1
Strings
8
FEATURED TAGS
Cryptography
Data Science
Debugging
Games
Tutorials
14 Kata Found
8 kyu
Regexp Basics - is it a digit?
18,165
taw
6 Issues Reported
Regular Expressions
Fundamentals
5 kyu
Regex Password Validation
29,855
EricFreeman
2 Issues Reported
Regular Expressions
Fundamentals
8 kyu
String cleaning
28,011
mkelty
Regular Expressions
Fundamentals
Strings
7 kyu
Remove anchor from URL
48,619
jhoffner
2 Issues Reported
Regular Expressions
Strings
Fundamentals
6 kyu
String subpattern recognition I
1,770
GiacomoSorbi
Strings
Regular Expressions
Fundamentals
7 kyu
Fix My Phone Numbers!
5,104
caralemony
Strings
Regular Expressions
Fundamentals
7 kyu
Regex validate PIN code
185,627
JMurphyWeb
1 Issue Reported
Regular Expressions
Fundamentals
8 kyu
A Strange Trip to the Market
16,074
sergarrick
3 Issues Reported
Regular Expressions
Strings
Fundamentals
8 kyu
Regex count lowercase letters
21,712
tdowek1
1 Issue Reported
Fundamentals
Regular Expressions
Algorithms
7 kyu
Chuck Norris II - One Punch
1,480
PG1
2 Issues Reported
Fundamentals
Regular Expressions
Algorithms
6 kyu
Encrypt this!
23,549
suic
Fundamentals
Strings
Regular Expressions
Arrays
Ciphers
Algorithms
Cryptography
Security
7 kyu
Disemvowel Trolls
375,274
osuushi
4 Issues Reported
Strings
Regular Expressions
Fundamentals
6 kyu
Count the smiley faces!
100,996
St3f4n
5 Issues Reported
Regular Expressions
Fundamentals
6 kyu
Dashatize it
15,257
Dragoris
Strings
Arrays
Regular Expressions
Fundamentals
Confirm
Collect:
undefined
Loading collection data...